summaryrefslogtreecommitdiffstats
path: root/drivers/net/stmmac/dwmac1000_dma.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/stmmac/dwmac1000_dma.c')
-rw-r--r--drivers/net/stmmac/dwmac1000_dma.c338
1 files changed, 5 insertions, 333 deletions
diff --git a/drivers/net/stmmac/dwmac1000_dma.c b/drivers/net/stmmac/dwmac1000_dma.c
index 39d436a2da68..415805057cb0 100644
--- a/drivers/net/stmmac/dwmac1000_dma.c
+++ b/drivers/net/stmmac/dwmac1000_dma.c
@@ -3,7 +3,7 @@
DWC Ether MAC 10/100/1000 Universal version 3.41a has been used for
developing this code.
- This contains the functions to handle the dma and descriptors.
+ This contains the functions to handle the dma.
Copyright (C) 2007-2009 STMicroelectronics Ltd
@@ -58,29 +58,20 @@ static int dwmac1000_dma_init(unsigned long ioaddr, int pbl, u32 dma_tx,
return 0;
}
-/* Transmit FIFO flush operation */
-static void dwmac1000_flush_tx_fifo(unsigned long ioaddr)
-{
- u32 csr6 = readl(ioaddr + DMA_CONTROL);
- writel((csr6 | DMA_CONTROL_FTF), ioaddr + DMA_CONTROL);
-
- do {} while ((readl(ioaddr + DMA_CONTROL) & DMA_CONTROL_FTF));
-}
-
static void dwmac1000_dma_operation_mode(unsigned long ioaddr, int txmode,
int rxmode)
{
u32 csr6 = readl(ioaddr + DMA_CONTROL);
if (txmode == SF_DMA_MODE) {
- DBG(KERN_DEBUG "GMAC: enabling TX store and forward mode\n");
+ CHIP_DBG(KERN_DEBUG "GMAC: enable TX store and forward mode\n");
/* Transmit COE type 2 cannot be done in cut-through mode. */
csr6 |= DMA_CONTROL_TSF;
/* Operating on second frame increase the performance
* especially when transmit store-and-forward is used.*/
csr6 |= DMA_CONTROL_OSF;
} else {
- DBG(KERN_DEBUG "GMAC: disabling TX store and forward mode"
+ CHIP_DBG(KERN_DEBUG "GMAC: disabling TX store and forward mode"
" (threshold = %d)\n", txmode);
csr6 &= ~DMA_CONTROL_TSF;
csr6 &= DMA_CONTROL_TC_TX_MASK;
@@ -98,10 +89,10 @@ static void dwmac1000_dma_operation_mode(unsigned long ioaddr, int txmode,
}
if (rxmode == SF_DMA_MODE) {
- DBG(KERN_DEBUG "GMAC: enabling RX store and forward mode\n");
+ CHIP_DBG(KERN_DEBUG "GMAC: enable RX store and forward mode\n");
csr6 |= DMA_CONTROL_RSF;
} else {
- DBG(KERN_DEBUG "GMAC: disabling RX store and forward mode"
+ CHIP_DBG(KERN_DEBUG "GMAC: disabling RX store and forward mode"
" (threshold = %d)\n", rxmode);
csr6 &= ~DMA_CONTROL_RSF;
csr6 &= DMA_CONTROL_TC_RX_MASK;
@@ -116,7 +107,6 @@ static void dwmac1000_dma_operation_mode(unsigned long ioaddr, int txmode,
}
writel(csr6, ioaddr + DMA_CONTROL);
- return;
}
/* Not yet implemented --- no RMON module */
@@ -138,306 +128,6 @@ static void dwmac1000_dump_dma_regs(unsigned long ioaddr)
readl(ioaddr + DMA_BUS_MODE + offset));
}
}
- return;
-}
-
-static int dwmac1000_get_tx_frame_status(void *data,
- struct stmmac_extra_stats *x,
- struct dma_desc *p, unsigned long ioaddr)
-{
- int ret = 0;
- struct net_device_stats *stats = (struct net_device_stats *)data;
-
- if (unlikely(p->des01.etx.error_summary)) {
- DBG(KERN_ERR "GMAC TX error... 0x%08x\n", p->des01.etx);
- if (unlikely(p->des01.etx.jabber_timeout)) {
- DBG(KERN_ERR "\tjabber_timeout error\n");
- x->tx_jabber++;
- }
-
- if (unlikely(p->des01.etx.frame_flushed)) {
- DBG(KERN_ERR "\tframe_flushed error\n");
- x->tx_frame_flushed++;
- dwmac1000_flush_tx_fifo(ioaddr);
- }
-
- if (unlikely(p->des01.etx.loss_carrier)) {
- DBG(KERN_ERR "\tloss_carrier error\n");
- x->tx_losscarrier++;
- stats->tx_carrier_errors++;
- }
- if (unlikely(p->des01.etx.no_carrier)) {
- DBG(KERN_ERR "\tno_carrier error\n");
- x->tx_carrier++;
- stats->tx_carrier_errors++;
- }
- if (unlikely(p->des01.etx.late_collision)) {
- DBG(KERN_ERR "\tlate_collision error\n");
- stats->collisions += p->des01.etx.collision_count;
- }
- if (unlikely(p->des01.etx.excessive_collisions)) {
- DBG(KERN_ERR "\texcessive_collisions\n");
- stats->collisions += p->des01.etx.collision_count;
- }
- if (unlikely(p->des01.etx.excessive_deferral)) {
- DBG(KERN_INFO "\texcessive tx_deferral\n");
- x->tx_deferred++;
- }
-
- if (unlikely(p->des01.etx.underflow_error)) {
- DBG(KERN_ERR "\tunderflow error\n");
- dwmac1000_flush_tx_fifo(ioaddr);
- x->tx_underflow++;
- }
-
- if (unlikely(p->des01.etx.ip_header_error)) {
- DBG(KERN_ERR "\tTX IP header csum error\n");
- x->tx_ip_header_error++;
- }
-
- if (unlikely(p->des01.etx.payload_error)) {
- DBG(KERN_ERR "\tAddr/Payload csum error\n");
- x->tx_payload_error++;
- dwmac1000_flush_tx_fifo(ioaddr);
- }
-
- ret = -1;
- }
-
- if (unlikely(p->des01.etx.deferred)) {
- DBG(KERN_INFO "GMAC TX status: tx deferred\n");
- x->tx_deferred++;
- }
-#ifdef STMMAC_VLAN_TAG_USED
- if (p->des01.etx.vlan_frame) {
- DBG(KERN_INFO "GMAC TX status: VLAN frame\n");
- x->tx_vlan++;
- }
-#endif
-
- return ret;
-}
-
-static int dwmac1000_get_tx_len(struct dma_desc *p)
-{
- return p->des01.etx.buffer1_size;
-}
-
-static int dwmac1000_coe_rdes0(int ipc_err, int type, int payload_err)
-{
- int ret = good_frame;
- u32 status = (type << 2 | ipc_err << 1 | payload_err) & 0x7;
-
- /* bits 5 7 0 | Frame status
- * ----------------------------------------------------------
- * 0 0 0 | IEEE 802.3 Type frame (length < 1536 octects)
- * 1 0 0 | IPv4/6 No CSUM errorS.
- * 1 0 1 | IPv4/6 CSUM PAYLOAD error
- * 1 1 0 | IPv4/6 CSUM IP HR error
- * 1 1 1 | IPv4/6 IP PAYLOAD AND HEADER errorS
- * 0 0 1 | IPv4/6 unsupported IP PAYLOAD
- * 0 1 1 | COE bypassed.. no IPv4/6 frame
- * 0 1 0 | Reserved.
- */
- if (status == 0x0) {
- DBG(KERN_INFO "RX Des0 status: IEEE 802.3 Type frame.\n");
- ret = good_frame;
- } else if (status == 0x4) {
- DBG(KERN_INFO "RX Des0 status: IPv4/6 No CSUM errorS.\n");
- ret = good_frame;
- } else if (status == 0x5) {
- DBG(KERN_ERR "RX Des0 status: IPv4/6 Payload Error.\n");
- ret = csum_none;
- } else if (status == 0x6) {
- DBG(KERN_ERR "RX Des0 status: IPv4/6 Header Error.\n");
- ret = csum_none;
- } else if (status == 0x7) {
- DBG(KERN_ERR
- "RX Des0 status: IPv4/6 Header and Payload Error.\n");
- ret = csum_none;
- } else if (status == 0x1) {
- DBG(KERN_ERR
- "RX Des0 status: IPv4/6 unsupported IP PAYLOAD.\n");
- ret = discard_frame;
- } else if (status == 0x3) {
- DBG(KERN_ERR "RX Des0 status: No IPv4, IPv6 frame.\n");
- ret = discard_frame;
- }
- return ret;
-}
-
-static int dwmac1000_get_rx_frame_status(void *data,
- struct stmmac_extra_stats *x, struct dma_desc *p)
-{
- int ret = good_frame;
- struct net_device_stats *stats = (struct net_device_stats *)data;
-
- if (unlikely(p->des01.erx.error_summary)) {
- DBG(KERN_ERR "GMAC RX Error Summary... 0x%08x\n", p->des01.erx);
- if (unlikely(p->des01.erx.descriptor_error)) {
- DBG(KERN_ERR "\tdescriptor error\n");
- x->rx_desc++;
- stats->rx_length_errors++;
- }
- if (unlikely(p->des01.erx.overflow_error)) {
- DBG(KERN_ERR "\toverflow error\n");
- x->rx_gmac_overflow++;
- }
-
- if (unlikely(p->des01.erx.ipc_csum_error))
- DBG(KERN_ERR "\tIPC Csum Error/Giant frame\n");
-
- if (unlikely(p->des01.erx.late_collision)) {
- DBG(KERN_ERR "\tlate_collision error\n");
- stats->collisions++;
- stats->collisions++;
- }
- if (unlikely(p->des01.erx.receive_watchdog)) {
- DBG(KERN_ERR "\treceive_watchdog error\n");
- x->rx_watchdog++;
- }
- if (unlikely(p->des01.erx.error_gmii)) {
- DBG(KERN_ERR "\tReceive Error\n");
- x->rx_mii++;
- }
- if (unlikely(p->des01.erx.crc_error)) {
- DBG(KERN_ERR "\tCRC error\n");
- x->rx_crc++;
- stats->rx_crc_errors++;
- }
- ret = discard_frame;
- }
-
- /* After a payload csum error, the ES bit is set.
- * It doesn't match with the information reported into the databook.
- * At any rate, we need to understand if the CSUM hw computation is ok
- * and report this info to the upper layers. */
- ret = dwmac1000_coe_rdes0(p->des01.erx.ipc_csum_error,
- p->des01.erx.frame_type, p->des01.erx.payload_csum_error);
-
- if (unlikely(p->des01.erx.dribbling)) {
- DBG(KERN_ERR "GMAC RX: dribbling error\n");
- ret = discard_frame;
- }
- if (unlikely(p->des01.erx.sa_filter_fail)) {
- DBG(KERN_ERR "GMAC RX : Source Address filter fail\n");
- x->sa_rx_filter_fail++;
- ret = discard_frame;
- }
- if (unlikely(p->des01.erx.da_filter_fail)) {
- DBG(KERN_ERR "GMAC RX : Destination Address filter fail\n");
- x->da_rx_filter_fail++;
- ret = discard_frame;
- }
- if (unlikely(p->des01.erx.length_error)) {
- DBG(KERN_ERR "GMAC RX: length_error error\n");
- x->rx_length++;
- ret = discard_frame;
- }
-#ifdef STMMAC_VLAN_TAG_USED
- if (p->des01.erx.vlan_tag) {
- DBG(KERN_INFO "GMAC RX: VLAN frame tagged\n");
- x->rx_vlan++;
- }
-#endif
- return ret;
-}
-
-static void dwmac1000_init_rx_desc(struct dma_desc *p, unsigned int ring_size,
- int disable_rx_ic)
-{
- int i;
- for (i = 0; i < ring_size; i++) {
- p->des01.erx.own = 1;
- p->des01.erx.buffer1_size = BUF_SIZE_8KiB - 1;
- /* To support jumbo frames */
- p->des01.erx.buffer2_size = BUF_SIZE_8KiB - 1;
- if (i == ring_size - 1)
- p->des01.erx.end_ring = 1;
- if (disable_rx_ic)
- p->des01.erx.disable_ic = 1;
- p++;
- }
- return;
-}
-
-static void dwmac1000_init_tx_desc(struct dma_desc *p, unsigned int ring_size)
-{
- int i;
-
- for (i = 0; i < ring_size; i++) {
- p->des01.etx.own = 0;
- if (i == ring_size - 1)
- p->des01.etx.end_ring = 1;
- p++;
- }
-
- return;
-}
-
-static int dwmac1000_get_tx_owner(struct dma_desc *p)
-{
- return p->des01.etx.own;
-}
-
-static int dwmac1000_get_rx_owner(struct dma_desc *p)
-{
- return p->des01.erx.own;
-}
-
-static void dwmac1000_set_tx_owner(struct dma_desc *p)
-{
- p->des01.etx.own = 1;
-}
-
-static void dwmac1000_set_rx_owner(struct dma_desc *p)
-{
- p->des01.erx.own = 1;
-}
-
-static int dwmac1000_get_tx_ls(struct dma_desc *p)
-{
- return p->des01.etx.last_segment;
-}
-
-static void dwmac1000_release_tx_desc(struct dma_desc *p)
-{
- int ter = p->des01.etx.end_ring;
-
- memset(p, 0, sizeof(struct dma_desc));
- p->des01.etx.end_ring = ter;
-
- return;
-}
-
-static void dwmac1000_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
- int csum_flag)
-{
- p->des01.etx.first_segment = is_fs;
- if (unlikely(len > BUF_SIZE_4KiB)) {
- p->des01.etx.buffer1_size = BUF_SIZE_4KiB;
- p->des01.etx.buffer2_size = len - BUF_SIZE_4KiB;
- } else {
- p->des01.etx.buffer1_size = len;
- }
- if (likely(csum_flag))
- p->des01.etx.checksum_insertion = cic_full;
-}
-
-static void dwmac1000_clear_tx_ic(struct dma_desc *p)
-{
- p->des01.etx.interrupt = 0;
-}
-
-static void dwmac1000_close_tx_desc(struct dma_desc *p)
-{
- p->des01.etx.last_segment = 1;
- p->des01.etx.interrupt = 1;
-}
-
-static int dwmac1000_get_rx_frame_len(struct dma_desc *p)
-{
- return p->des01.erx.frame_length;
}
struct stmmac_dma_ops dwmac1000_dma_ops = {
@@ -454,21 +144,3 @@ struct stmmac_dma_ops dwmac1000_dma_ops = {
.stop_rx = dwmac_dma_stop_rx,
.dma_interrupt = dwmac_dma_interrupt,
};
-
-struct stmmac_desc_ops dwmac1000_desc_ops = {
- .tx_status = dwmac1000_get_tx_frame_status,
- .rx_status = dwmac1000_get_rx_frame_status,
- .get_tx_len = dwmac1000_get_tx_len,
- .init_rx_desc = dwmac1000_init_rx_desc,
- .init_tx_desc = dwmac1000_init_tx_desc,
- .get_tx_owner = dwmac1000_get_tx_owner,
- .get_rx_owner = dwmac1000_get_rx_owner,
- .release_tx_desc = dwmac1000_release_tx_desc,
- .prepare_tx_desc = dwmac1000_prepare_tx_desc,
- .clear_tx_ic = dwmac1000_clear_tx_ic,
- .close_tx_desc = dwmac1000_close_tx_desc,
- .get_tx_ls = dwmac1000_get_tx_ls,
- .set_tx_owner = dwmac1000_set_tx_owner,
- .set_rx_owner = dwmac1000_set_rx_owner,
- .get_rx_frame_len = dwmac1000_get_rx_frame_len,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 07:51:40 +0100